Device



Patented May 27,1919.

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R. H. PLASS.

WEB PRINTING DEVICE.

APPLICATION FILED NOV. 24. I917.

1,305,235. Patented May 27,1919.

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- y ATTORNEY R. H. PLASS.

WEB PRINTING DEVICE.

APPLICATION FILED NOV. 24. 1911.

Patented May 27,1919.

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%; ATTORNEY n45 mum/s PETERS C0,. PNUTB-LITHU 4 WASHINGYOIL u. c

ROBERT PLASS, or UPPER MonT'oLAm, NEW JERSEY.

WEB-PRINTING 'D'Evrcn.

Specification of Letters Patent- Patent a '27, 1919 Application filedNovember 24,1917. SerialiNo. 203,662. 1

To all whom it may concern:

Be it known that I, ROBERT E. PLAss, a citizen of Germany, residing inthe city of Upper Montclair, county of Essex, and State of New Jersey,have invented certain new and useful Improvements in Web- PrintingDevices, of which the following is a full, clear, and exactspecification.

My inventionrelates to web printing devices and refers particularly to adevice whereby impressions'may beprinted upon a continuous web atpredetermined distances from each-other, irrespective of the diameter ofthe printing rollers.

One object of my invention is a device whereby printed impressions maybe made upon a web at predetermined distances from each other.

Another object of my invention is a de vice whereby printed impressionsmay be made upon a web at distances irrespective of the diameter of theprinting roller.

Another object of my invention is a device in which a printing rollermay be employed to produce printed impressions upon a web at anypredetermined distance from each other.

Another object of my invention is a web printing device which is capableof printing impressions at varying distances from each other. v

These and other objects of the device of my invention will be evidentupon a consideration of my specification and claims.

In the generally employed methods of printing upon webs, the type 01'otherprinting means are aflixed to the outer surface of a revolubleroller or cylinder, the web passing between said roller and a platen. Inthis manner the web receives a printed impression upon each revolutionof the roller and hence the impressions areequally distant from eachother, the distance between them being represented by the circumferenceof the roller. 7

It is frequently desirous to print the impressions at a distance fromeach other greater than the circumference of the printing roller, thisrequirement being particularly important where the web is afterward cutinto desired lengths, as in the production ofjbags. y

In the machines described above the dis tance between the printedimpressions is a fixed one dependent upon the circumference of the,printingroller and hence a printing roller of definite circumferencemust be em ployed in the printing of bags-of each particular size inorder that the impressions may be uniformly printed upon all of the,bags, and as all of the other component parts of-themachine are inuniformity with the printing roller, a separate machine is necessary foruse upon each class of work.

I overcome this serious difii'culty by pre-- senting' a machine, thatwill permit impressions upon'a web at any predetermined distance fromeach other irrespective of the size ofthe printing roller, thusallowingthe one machine to be used in the printing of bagwebbing for any desiredsizeof bags.

The advantages of the device of my invention and its economicalproduction of web printing as regards labor, time, space and rapidity'ofoutput are evident upon a consideration of my specification.

. In a broad way my invention comprises a device whereby anypredetermined length'of the web may be drawn past the printing rollerduring the neutral or non-printing period of the roller, thus allowingthe printed impressions to be separated from each other by a distancegreater than the circumference of said roller. 7 a I In the particularform of the device of my invention illustrated in the accompanyingdrawings, similar parts are designated by similar numerals I Figure 1 isan end plan view, partly in section.

1 Fig. 2 is an enlarged elevation of Fig. l with side frame removed,partly broken. and partly in section.

Fig. 3 is across-section through the line Fig. at is a cross-sectionthrough the line 4 4: of Fig. 3.

The particular form of the device of my invention as shown in theaccompanying drawings, comprises a power driven revoluble shaft 10carrying the spur gear 11, which meshes with the spur-gear 12 carried bythe revoluble shaft 18. The spur-gear 12 meshes with the spur-gear 14:carried by the 'revolu ble shaft 15, which in turn meshes with thespur-gear 16 carried by the revoluble shaft 17 andthe spur-gear 18carried the rev.- oluble shaft 19. The spur-gear 18 meshes with thespur-gear 20 carried by the revoluble shaft 21, which in turn mesheswith the spur-gear 22 carried by the revoluble shaft The s a 121 ca r se pla en ro ler 24, and the shaft carries the roller 25 having theprinting means 26 upon a portion of its perimeter. The shaft 15 carriesthe platen roller 27, and the shaft 17 carries the roller 28 having theprinting means 29 upon a portion of its perimeter, the position of theplaten rollers and the printing rollers being such that a web 100carried between them during their revolution will receive printedimpressions. Meshed with the spurgear 12 is the spur-gear 3O fixedlyattached to the revoluble shaft 31. The shaft 31 carries the cam 32fixedly attached thereto. Revolubly carried by the frame 33, 33 of thedevice is the rock shaft 34;. Fixedly attached to the rock shaft 3 1 isthe cam arm 35, upon the portion 36 of which the cam 32 abuts. Fixedlyattached to the rock shaft 3a are the arms 37, 37, to the other ends ofwhich are pivotally attached the links 38, 38, the latter beingpivotally attached to the shaft 39, revoluble in the slide bearing 40,and carrying the roller il, the slide bearing 10 being capable of avertical movement within the track supports 42, 42. Capable of beingrevolved by the revolution of the spur-gear 30 is a series of spur-gears43', 4 1, 15, 46, 47, 18 and 49. The spur-gear 47 is fixedly attached toa shaft carrying the roller 50, and the spur-gear 4:9 is fixedlyattached to a shaft carrying the roller 52. Abutting upon the rollers 50and 52 and frictionally revoluble therewith is the roller 51, held inabutment by means of the spring 53. A set screw 55 abutting upon one ofthe arms 37 determines the length of the movement of the arms 37, 37 andthe roller 41, and the stop pin 56 prevents the arms 37, 37 and theroller &1 from dropping too far when the web 100 is removed. Revolubleidlers 57, 58, 59, 60 and 61 are introduced into the path of the web100.

If it is desired to change the speed of the rollers 50, 51 and 52, theset screw 90 is loosened, the frame 91 revolved upwardly, and thespur-gear 4E6 replaced by one of the desired size, the frame 91 lowereduntil the introduced spur-gear meshes with the spurgear et7 and the setscrew 90 tightened.

The operation of the device is as follows When the platens 24 and 27 andthe printing rollers 25 and 28 are revolved by means of the spur-gear 11through the series of Y connecting spur-gears, the web 100 is drawn overthe idlers 57, 58 and 59 and printed at approximately the same portionof the web by the printing means 26 and 29. The mechanism issynchronized so that when the platens and printing rollers are inposition shown in Fig. 2, leaving a space between the platens and theprinting rollers, the cam 32 will move downwardly, carrying with it themembers 37 and'38 and the roller 41 from the full line positions to thedotted line positions, thus pulling an amount of web be tween theplatens and the printing rollers, the amount being predetermined by thelength of the stroke of the roller &1 as governed by the position of theset screw 55. The roller then returns to its extreme upper position andthe loose web thus produced passes between the rollers 50, 51 and 52 andthe idler 61, the speed of the rollers 50, 51 and 52 being so fixed asto take up and carry away the loose web during the next printingprocess, so that when the printing means have again completed theiroperation, the loose web will have been disposed of and the operation ofdrawing another portion of web can be accomplished. As the roller 51 isheld in frictional abutment against the rollers 50 and 52, thus holdingthe web 100 during the downward movement of the roller 41, the web 100will be drawn from the folded web supply resting upon a suitableplatform 101 and hence drawn between the platens 24: and 27 and theportions of the printing rollers 25 and 28 not carrying the printingmeans 26 and 29.

It is evident that the device will thus withdraw the web evenly andquickly without sudden jerks, thus producing positive and uniformresults.

I do not limit myself to the particular size, shape, number orarrangement of parts as described and shown, all of which can be variedwithout going beyond the scope of my invention as described and claimed.

What I claim is 1. In a web printing machine, in combination, arevoluble web printing means capable of conveying a web, means forrevolving the web printing means, conveying means for conveying the webafter printing preventing the return movement of the web, acceleratingmeans between the printing means and the conveying means and a cammovement whereby the speed of the web may be accelerated past theprinting means during non-printing periods.

2. In a web printing machine, in combination, a revoluble web printingmeans capable of conveying a web, means for revolving the web printingmeans, conveying means for conveying the web after printing preventingthe return movement of the web, movable means abuttable upon the webbetween the printing means and the conveying means and a cam movementfor moving the movable means at predetermined periods accelerating themovement of the web past the printing means.

3. In a web printing machine, in combination, a revoluble web printingmeans capable of conveying a web, means for revolv ing the web printingmeans, conveying means for conveying the web after printing preventingthe return movement of the web, movable means abuttable upon the webbetween the printing means and the conveying means and a cam movementfor moving the movable means coincident with a nonprinting periodwithdrawing a predetermined length of web past the printing means.

4:. In a web printing machine, in combination, a revoluble web printingmeans capable of conveying a web, means for revolving the web rintingmeans, conveying means for conveying the web after printing preventingthe return movement of the web, accelerating means for accelerating themovement of the web at predetermined periods and a cam movementsynchronizing the action of the accelerating means with the non-printingperiods of the printing means.

5. In a web printing machine, in combination, a revoluble printingcylinder capable of conveying a web, means for revolving the cylinder,printing means upon a portion of the perimeter of the cylinder, aplaten, conveying means for conveying the web after printing preventingthe return movement of the web, an accelerating member between theprinting cylinder and the conveying means transverse of the web and acam movement for rendering the accelerating member operative atpredetermined periods withdrawing a predetermined length of web frombetween the printing cylinder and the platen during non-printingperiods.

6. In a web printing machine, in combination, a revolu ble printingcylinder, means for revolving the cylinder, printing means upon aportion of the perimeter of the cylinder, a platen, conveying means forconveying the web after printing preventing the return movement of theweb, an accelerating member between the printing cylinder and theconveying means transverse of the web, a cam movement synchronized withthe non-printing periods moving the accelerating member and withdrawinga length of web past the printing cylinder, means for regulating thelength of the web withdrawn and means for the movement of the web duringprinting periods.

nation, a revoluble printing cylinder, means a for revolving thecylinder capable of conveying a web, printing means upon a portion ofthe perimeter of the cylinder, a platen, a series of revoluble conveyingrollers for conveying the web after printing preventing the returnmovement of the web, means for revolving the conveying rollers, anaccelerating member between the printing cylinder and the conveyingrollers transverse of the web and abuttable thereon, a cam movementsynchronized with the nonprinting periods moving the accelerating memberand withdrawing web from between the printing cylinder and the platenduring non-printing periods, means for regulating the length of movementof the accelerating member, and means for returning it to itsinoperative position during printing periods. V

9. In a web printing machine, in combination, a series of revolubleprinting cylinders capable of conveying a web and having printing meansupon a portion of their perimeters, a series of platens, means forrevolving the printing cylinders and the platens, conveying means forconveying the printed web and preventing the return movement of the web,an accelerating member between the printing cylinders and the conveyingmeans and a cam movement synchronized between the printing cylinder andthe accelerating member whereby a predetermined length of web will bewithdrawn between the cylinder and the platens during non-printingperiods.

Signed at Jersey City, in the county of Hudson and State of New Jersey,this 22nd day of November, 1917.

ROBERT H. 'PLAss.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

